<template>
  <view>
    <view class="search-box">
      <input type="text" placeholder="请输入内容"
        style="width: 100%;height: 80rpx;border: 1rpx solid;padding-left: 30rpx;border-radius: 30rpx;box-sizing: border-box;"
        @input="textInput" v-model.trim="text"></input>
    </view>

    <!-- 搜索建议列表 -->
    <view class="sugg-list" v-if="searchResult.length !== 0">
      <view class="sugg-item" v-for="(item, i) in searchResult" :key="i" @click="gotoDetail(item.goods_id)">
        <view class="goods-name">{{item.goods_name}}</view>
        <uni-icons type="arrowright" size="16"></uni-icons>
      </view>
    </view>

    <!-- 搜索历史 -->
    <view class="history-box" v-else>
      <!-- 标题区域 -->
      <view class="history-title">
        <text>搜索历史</text>
        <view @tap='clearHistory'>清空</view>
      </view>
      <!-- 列表区域 -->
      <view class="history-list">
        <view v-for="(item, i) in historys" :key="i" @click="gotoGoodsList(item)">{{item}}
        </view>
      </view>
    </view>

  </view>
</template>

<script>
  export default {
    data() {
      return {
        text: '',
        timer: null,
        searchResult: [],
        // 搜索关键词的历史记录
        historyList: ['a', 'app', 'apple']
      };
    },
    onLoad() {
      this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
    },
    methods: {
      textInput() {
        clearTimeout(this.timer)
        this.timer = setTimeout(() => {
          console.log(this.text)
          this.getResultList()

        }, 500)
      },
      saveSearchHistory() {
        // this.historyList.push(this.text)
        const set = new Set(this.historyList)
        set.delete(this.text)
        set.add(this.text)
        this.historyList = Array.from(set)
        uni.setStorageSync('kw', JSON.stringify(this.historyList))
      },
      clearHistory() {
        this.historyList = []
        uni.setStorageSync('kw', '[]')
      },
      gotoGoodsList(kw) {
        uni.navigateTo({
          url: '/subpkg/goods_list/goods_list?query=' + kw
        })
      },

      async getResultList() {
        if (!this.text) {
          this.searchResult = []
          return
        }
        const res = await this.$http.request('/api/public/v1/goods/qsearch', {
          query: this.text
        }, 'get')
        if (res.meta.status !== 200) return uni.$showMsg()
        this.searchResult = res.message
        this.saveSearchHistory()
      },
      gotoDetail(goods_id) {
        uni.navigateTo({
          // 指定详情页面的 URL 地址，并传递 goods_id 参数
          url: '/subpkg/goods_detail/goods_detail?goods_id=' + goods_id
        })
      },


    },
    computed: {
      historys() {
        return [...this.historyList].reverse()
      }
    }
  }
</script>

<style lang="scss" scoped>
  .uni-searchbar {
    /* #ifndef APP-NVUE */
    display: flex;
    /* #endif */
    flex-direction: row;
    position: relative;
    padding: 16rpx;
    /* 将默认的 #FFFFFF 改为 #C00000 */
    background-color: #c00000;
  }

  .search-box {
    position: sticky;
    top: 0;
    z-index: 999;
  }

  .sugg-list {
    padding: 0 5px;

    .sugg-item {
      font-size: 12px;
      padding: 13px 0;
      border-bottom: 1px solid #efefef;
      display: flex;
      align-items: center;
      justify-content: space-between;

      .goods-name {
        // 文字不允许换行（单行文本）
        white-space: nowrap;
        // 溢出部分隐藏
        overflow: hidden;
        // 文本溢出后，使用 ... 代替
        text-overflow: ellipsis;
        margin-right: 3px;
      }
    }
  }

  .history-box {
    padding: 0 5px;

    .history-title {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 40px;
      font-size: 13px;
      border-bottom: 1px solid #efefef;
    }

    .history-list {
      display: flex;
      flex-wrap: wrap;

      view {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 100rpx;
        height: 40rpx;
        margin-top: 5px;
        margin-right: 5px;
      }
    }
  }
</style>
